First, to satisfy me... How accurate is apple's shipe estimate?!?! It says it should ship by the 19th...Bu tI'm wondering if there is a chance it will arrive sooner? I REALLY want it.. Secondly, an actual question... I'll install istumble when I get it, but I' a desktop mac user, so I'm not sure how wireless networks are, in terms of connecting. If I just drive around, and it detects an open network, will it connect? Or, if not, what all is involved?